Vector-Controlled Voltage-Source-Converter-Based Transmission Under Grid Disturbances

Parkhideh, Babak; Bhattacharya, Subhashish

doi:10.1109/tpel.2012.2204071

Cited by 52 publications

(15 citation statements)

References 31 publications

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“…Presently, the PI controllers and proportional multiresonant controllers are usually applied to the inverter-based microgrid as well as droop control method. But recently, adaptive backstepping method is applied to the power electronic system [37], [38], which allows the designer to incorporate most system nonlinearities and uncertainties in the design of the controller. The modified backstepping control method has been utilized to design the controller of BTB VSC system which is applied in HVDC, wind generation system, and hybrid power system such as transmission transformer (partial) bypass.…”

Section: B Design Of Nonlinear Controller Of Spbtbmentioning

confidence: 99%

Hybrid Three-Phase/Single-Phase Microgrid Architecture With Power Management Capabilities

Sun

Zhou

Guerrero

et al. 2015

IEEE Trans. Power Electron.

142

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With the fast proliferation of single-phase distributed generation (DG) units and loads integrated into residential microgrids, independent power sharing per phase and full use of the energy generated by DGs have become crucial. To address these issues, this paper proposes a hybrid microgrid architecture and its power management strategy. In this microgrid structure, a power sharing unit (PSU), composed of three single-phase back-to-back (SPBTB) converters, is proposed to be installed at the point of common coupling (PCC). The aim of the PSU is mainly to realize the power exchange and coordinated control of load power sharing among phases, as well as to allow fully utilization of the energy generated by DGs. Meanwhile, the method combining the modified adaptive backstepping-sliding mode control approach and droop control is also proposed to design the SPBTB system controllers. With the application of the proposed PSU and its power management strategy, the loads among different phases can be properly supplied and the energy can be fully utilized as well as obtaining better load sharing. Simulation and experimental results are provided to demonstrate the validity of the proposed hybrid microgrid structure and control. I. INTRODUCTIONWith the high penetration of DGs, the concept of microgrids that can operate in either grid-connected or islanded modes is becoming more attractive [1]- [5]. A microgrid is a local controllable low-voltage distribution network consisting of a number of DGs, energy storage systems, and dispersed loads. DGs are often connected to the microgrid through power electronic interface converters, which are aimed at controlling the power injection while improving the power quality at the same time. Both the customers and power utilities can benefit from the microgrid concept, which can offer diversified energy options and high power quality and reliability [6]-[10]. Additionally, the use of low or zero emission generators in microgrids can increase the overall efficiency of energy utilization, dealing with environmental concerns, such as CO 2 emissions and reduction of dependence on conventional power generation [11], [12]. Accurate power management control among DGs is an important issue for the autonomous operation of microgrids. Typically, frequency and voltage droop control schemes are adopted to achieve power sharing among DGs without relying on communication [9], [10], [13]. Nevertheless, droop controlled microgrids are prone to have some stability and power sharing accuracy problems due to complex feeder impedances and high control gains [14]-[16]. To address these problems, stability-constrained and adaptive decentralized droop controllers have been proposed in [17]-[19]. In [20], the reactive power sharing accuracy was improved with the consideration of impedance voltage drop, the DG local load effects and the use of a virtual inductor loop. Methods based on virtual complex impedance loop and reactive power control error estimation were also proposed in [21] and [22], respectively. In or...

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Section: B Design Of Nonlinear Controller Of Spbtbmentioning

confidence: 99%

Hybrid Three-Phase/Single-Phase Microgrid Architecture With Power Management Capabilities

Sun

Zhou

Guerrero

et al. 2015

IEEE Trans. Power Electron.

142

View full text Add to dashboard Cite

show abstract

“…Previous work on MMC-HVDC has mainly concentrated on analyzing fault characteristics via calculations and simulations [1][2][3][4] and on control strategies under fault conditions [5][6][7][8]. The fault in an AC/DC (direct current) hybrid system is simulated by comparing different fault features [1].…”

Section: Introductionmentioning

confidence: 99%

“…Faults at the AC, DC, and valve sides of the MMC-HVDC system and the corresponding fault transient simulations are performed considering different transformer connections [4]. On the basis maintain system stability [5][6][7][8]. The fault detection method in an AC transmission line cannot be directly applied to the fault diagnosis of the MMC-HVDC system given different topologies and fault protection requirements.…”

Section: Introductionmentioning

confidence: 99%

Rapid Fault Diagnosis of a Back-to-Back MMC-HVDC Transmission System under AC Line Fault

et al. 2018

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Abstract:The integration of a modular multilevel converter-based high-voltage direct current (MMC-HVDC) transmission system in power networks has led to a high requirement for the rapidity of fault recognition. This study focused on the rapid fault diagnosis of an alternating current (AC) line fault in a back-to-back (BTB) MMC-HVDC system via fault detection and classification. Discrete wavelet transform and modulus maxima were applied to extract the fault features. Phase-mode transformation and normalization were adopted to widen the application range. Simulation and calculation results indicated that the proposed method can detect all fault types in an AC transmission line on the basis of single-side fault information within 1 ms under different values of transition resistance, fault inception angle, and fault distance. The BTB MMC-HVDC model was built using real-time laboratory (RT-LAB) based on the matrix laboratory (MATLAB) software platform, and the fault diagnosis algorithm was performed in MATLAB.

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“…The whole design process and the adjustment of parameter in backstepping controller are convenient, which is easy to be accepted by the engineering staff. Backstepping is widely used in the control system design of VSC-HVDC, which has obtained some achievements [15][16][17][18][19][20][21][22]. But this kind of controller has the following two main disadvantages: (1) the derivative of each virtual controller needs to be analyzed and calculated, and the calculation process is very complicated, so it is difficult to be applied in practical engineering; (2) physical limitations in practical systems are not considered in the design process of controller, which may cause the problem of control saturation [14].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Control of Back-to-Back VSC-HVDC System via Command-Filter Backstepping

Huang

Yan

et al. 2017

Journal of Control Science and Engineering

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This paper proposed a command-filtered backstepping controller to improve the dynamic performance of back-to-back voltage-source-converter high voltage direct current (BTB VSC-HVDC). First, the principle and model of BTB VSC-HVDC in abc and d-q frame are described. Then, backstepping method is applied to design a controller to maintain the voltage balance and realize coordinated control of active and reactive power. Meanwhile, command filter is introduced to deal with the problem of input saturation and explosion of complexity in conventional backstepping, and a filter compensation signal is designed to diminish the adverse effects caused by the command filter. Next, the stability and convergence of the whole system are proved via the Lyapunov theorem of asymptotic stability. Finally, simulation results are given to demonstrate that proposed controller has a better dynamic performance and stronger robustness compared to the traditional PID algorithm, which also proves the effectiveness and possibility of the designed controller.

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Vector-Controlled Voltage-Source-Converter-Based Transmission Under Grid Disturbances

Cited by 52 publications

References 31 publications

Hybrid Three-Phase/Single-Phase Microgrid Architecture With Power Management Capabilities

Hybrid Three-Phase/Single-Phase Microgrid Architecture With Power Management Capabilities

Rapid Fault Diagnosis of a Back-to-Back MMC-HVDC Transmission System under AC Line Fault

Nonlinear Control of Back-to-Back VSC-HVDC System via Command-Filter Backstepping

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